Welcome to Constitution Marsh Audubon Center and Sanctuary

The natural side of the Hudson River.

* PLEASE NOTE: We are a small facility with very limited space for public parking. The site is best suited for group visits that are arranged well in advance. Dogs are not allowed on the trail. Thank you for understanding.

Constitution Marsh Audubon Center and Sanctuary is a unique and beautiful tidal marsh located in Putnam County, New York, and serves as vital natural habitat in the Hudson River Estuary. It is located in Putnam County, New York on the east shore of the Hudson River, just south of the village of Cold Spring. The marsh is an Audubon New YorkImportant Bird Area, a New York State Bird Conservation Area, and is designated as a Significant Coastal Fish and Wildlife Habitat.

We conduct nature education programs for visiting groups, bird studies, invasive species management and habitat restoration efforts. Please read our FAQ page for important information and a safe and enjoyable visit, and explore the above menus to learn more about Audubon New York's stewardship and education programs devoted to the conservation of birds, other wildife and their habitats across New York State.